Description:
TNG is a gravimetric geoid model for Tunisia computed by Office de la Topographie et du Cadastre (OTC),
Tunisia. The area covered by this model is 36.61° < lat < 37.36°, 9.64° < lon < 10.39° with grid spacing of 0.05° in both latitude
and longitude. It is referred to GRS80 and it is computed by using the remove-restore tecnhique with Stokes integration. It is based
on about 57 gravity data, the EGM96 global geopotential model and a digital terrain model covering the area of Tunisia. The TNG model has
been assessed by comparing it with 12 GPS/levelling points of the NGT network, showing residuals with a standard deviation of 1.64 cm
after adjustment.
References:
Z. Ismail (2016). Détermination de l’exactitude d’un géoïde gravimétrique. PhD Thesis at PSL Research University, Paris, France.
Web of Science ID:
DRCI:DATA2019017015400556
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